Mixing device



Patented oer. i 25, ie27.-

aai-aises RICHARD BOW'EN,

orconuirsus, onio, assieivon 'ro sarna coni. rnoonss COMPANY, or Ansusrs., Marian, a oonrortirrioiv or Marian. f

Minnie :envien Original application med Maren 13, 1924, serial No. 692,831. Bivided and this application filed February cation Seria-l No. 696,831, tiled March 12?), 0 19211, which relates to apparatus ior fabri-V cating agglomerated masses.

other Objects er the invention wai in part be obvious and will in part appear hereinafter. l

The inventionV accordingly comprises the features ot' construction, combinations o't elements, and arrangement of parts, which will beV exemplified in the construction heren inafter set fort-h and the scope of the application of which will be indicated in the claims. y

For a 'fuller understanding ofthe nature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figui-e1 is a side elevation ot a mixing device constructed in accordance with this invention; n Fig. 2 is a` fragmentary sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is an enlarged end view of thc mixing device proper, )arts being broken away in order to better illustrate theparts; and

Fig. 4 is aview partly in sect-ion and partly in plan (parts being broken away.) showing further details of the mixingdevice illustrated yin 3. as viewed from the top.

Referring now to the drawing and to Fig,

1 in particular, A denotes generally the mixing device which is shown as supported iii operative position with respect to cooperating apparatus by means of a suitable :traine work, suoli as indicated at 10.

The mixing device, as illustrated, has an upper hopper 11, a mixing chamber .12 and a lower liopper 13 adapted to receive the mixture, when sufficiently mixed. Within the` mixing chamber, as shown Vmore clearly vin Fig. 6, there is disposed a rotatable shaft Vkeyed to the sleeve 17,` .collar is adapted to be moved. axially at will I into and out oi'engagenient with a constantly rotating gear 19, which .normally rotates 1925. Serial No. 11,076.

14, to which mixing blades 15' are secured.

These blades are so disposed that the projections of their edges upon the axis or the.

shaft 111 meet 'it at an acute angle.

Arranged to'pivot about. the shaft 121 is a swinging trough-like member 16 'forming a bottom for the mixing chamber and haviiiv` a rigidly secured sleever 17 which serves a bearing for the shaft i through a sliding collar 18, the latter-being as indicated.

on. the sleeve l?, as an'idler. llVhcn4 the collar 18 is slid yinto engagement with gear v19, power is transmitted therefrom to the` sleeve 17 'to move the bottom 16 into an 1-1- andv `is actuatedl The l titi upper inverted position to discharge the mixed batch into the lower hopper 18..

1 stop is provided for the bottom member 16 morder to insure that it Awill `come to rest in proper registry when swungy into lower position. Thisfstop includes a latch f `bar or plunger 21, which is resiliently pressedint'o a groove 22 in the upper part of the end wall or' the bottom member 16. This latch bar or plunger is connectedy at 23 with a leverp2l, which is pivotedat 25 and arranged toactuate the sliding collar 18. Thus when it is desired to apply power to move the bottom 16, the plunger 21 is auto-k matically removed "lfiomengagement with the groove 22, therebyv releasing the bottom to be moved 'by the gear19. When the bottom is swung back to the lower position, and it approaches the desired point ot rest, the collar 1S isdisengaged lfromthe gear 19, the inonientui'ii ,with which the botl tom member is moving'carrying it on to a position where ,the plunger 21 will snap into engagement with the groove 22, thereby holding` it ystationary and ixed .in the desired lower position. y v

1Within the mixing chamber 12 there is disposed a grid of pipe 26, providedwith transverse sections 27 having perforations in their lower. surfaces. sections aie disposed near the top ot the mixing chamberabove the mixing blades 15 and are adapted to discharge downwardly a heating medium such yas steam to heat and assist lin the proper mixing vot the ingreclients. oit the upper hopper ll'there are disposed Th ese transverse Just. above the grid andat the basev Cil a plurality of triangular transverse bars 28 which aid in attaining the proper distribution of `the ingredients which are poured into the hopper within the mixing chamber. J ust below the bars 28 is disposed the transversely movable valve 28, which is adapted to close the topof the mixing chamber when' desired, o y

The inixingdevice, as shown more clearly iii'F ig. a is actuated from the single pulley 29, which through suitable gearing 30 rotates the shaft lll. This pulley 29 has power shafting `3l which transmitspower through gearing 32 to actuate the idlergear 19. The pulley 2 9 may bedriven trom any suitable power unit o (not` shown) by means of a belt. 1

In operating theinixing device above def during mixing by a` suitable heating means.

In the formof the inventionhei'e `illustrated, this is accomplished by the grid of pipe shown at 27.from which `live steam ,is` in-V jected into the `mixtureduring mixing. The temperature ot the' steam thus usedtor heating while mixing the components above indicated is preferably from 250OY 08500 FQ By reason of theangular disposition et the blades, the components while being mixed are notoiily given a tangential thrust but also an axial thrust by the blades l5, and are partially elevated thereby as theygo around. The materials are thus thoroughly agitated, the comminuted particles falling through paths generally crossing each other thereby becoming very intimately mixed.

lVhen the components `have been suitably mixed the lever 2li is moved to couple the continuously revolving idler gear 19 mechanically to move the bottom member 1G in order to discharge the mixture into the lower hopper 13, from whence the mixtuiz'e is removed 'as desired.

Since certain changes may be made in the above construction and different embodi- ,ments ot the invention could be made without departing from the scope thereof,'it is intended that all matter contained inthe above descriptionror shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

`Having .described my invention, what I Y cla-im as new and desire to secure by Letters a Patent. is:

l. A mixingV deviceadapted for continuousl batch-mixing of heterogeneous components including viscous material, comprising an upper hopper, a lower hopper, mixing chamber, each being arranged as a su cessive continuation ot the i'oriner, the Ylatter beingl provided with a bottomformed of a movable member arranged to be tiltably withdrawnso as to provide an unobstructed relatively large opening disposed centrally and adapted to discharge into the lower hopper, said lioppers each being provided Y witha valve controlled outlet, and revolving bladesin said chamber arranged toiinpart both vertical and horizontal movement to the components within the chamber.

2. A mixing device adapted tor continuous batch-mixing ot p heterogeneous components including viscous material, comprising an upper hopper, alower hopper, a

mixing chamber, each being arrangedas a successive continuation of the tormer, the

latter being providedl with a bottom termed oit a movable trough-like member arranged to be tiltably withdrawn so asto provide an unobstructed relatively large opening4 disposed centrally and adapted to discharge into the lower hopper, said hoppers each being provided witlia valve controlled outlet, revolving blades in said chamber ai'- ranged to impart both vertical and horizontal movement to the components within the chamber, and a grid of pipe disposed in said wchamber so as to emit a heating medium, 3. In apparatus for' mixing heterogeneous components including viscous material in i batches to `be agglomerated, the'combination with a stationary mixing chamber, of a horizontally disposed shaft j ournalled there-` i in and provided with blades adapted to mix the material, a movable bottom formed of a swinging trough-like memberjournaled on f said shaft and adapted to swing about the same an arcuate distance suliicient to discharge the mixture substantially completely from said chamber.

Ll. In apparatus t'or mixing heterogeneous components including viscous material in batches to be agglomerated, the combination with a stationary mixing chamber, of a horizontally disposed shaft j oiirnalled there- `in and provided with blades adapted to mix the material, a movable bot-tom formed of a swinging trough-like member ]ournaled on said shaft and adaptedto swing about the same an arcuate distance sunicient to discharge the mixture substantially completely from said chamber, and means for locking said movable bottom Yin a predetermined position. v o

5.V In apparatus for mixing heterogeneous components including viscous material in batches to be ao'elomeiated` the combination."`

with a stationary mixing chamber, of a horizontally disposed shaft journalled` therein Q30 swinging trough-like member journaled on said shaft and adapted to swing about the' same an arcuate distance sufficient to discharge the mixture substantially completely `from said chamber, and means for automatically locking` said bottom in a predetermined lower position.

6. In apparatus for mixing heterogeneous components including viscous material in batches to be agglomerated, the combination with a mixing` chamber, oi a horizontally disposed shaft providedwvith blades adapted to mix the material, a movable bottom having end Walls journaled on said shaft -andvadapted tosiving about the same an arcuate distance suliici'ent tov discharge the mixture substantially completely, one oi said end Walls having a locking groove formed therein, and a plunger adapted resilientlj7 to engage Wit-h said groove.

ln testimony whereof I aix my signature.

RICHARD BOVEN. 

